Flush-valve.



J. LAFRANGE.

FLUSH VALVE.

APPLICATION FILED NOV.14, 1910.

1,006,956, Patented 0015.24, 1911.

I 8 5 I I I l l I I I WITNESSES INVENTOR ATTORNEYS JOSEPH LAFRANGE, 0F MONTREAL, QUEBEC, CANADA.

FLUSH-VALVE.

Specification of Letters Patent.

Application filed November 14, 1910. Serial No. 592,156.

To all whom it may concern:

Be it known that I, J osnrrr LAFRANCE, a citizen of the United States, residing at Montreal, Province of Quebec, Dominion of Canada, have invented a new and useful Flush-Valve, of which the following is a specification.

My invention relates to flushing mechanism for tanks and more particularly to those which are adapted to be actuated by levers and chains.

One object of my invention is to eliminate the necessity of employing rubber or other gaskets and brass thimble overflows at the interior of the siphon, thereby greatly simplying the installation of the flushing mechanism and not only reducing the initial cost but also the bother and cost of repairs.

With the above object in view my invention consists of a novel construction of flushing mechanism and novel means of securing the same in assembled position.

It further consists of other novel features of construction, all as will be hereinafter fully set forth.

For the purpose of illustrating my invention, I have shown in the accompanying drawings one form thereof which is at present preferred by me, since the same has been found in practice to give satisfactory and reliable results.

Figure 1 represents a sectional elevation of a port-ion of a tank having a flushing mechanism embodying my invention employed in conjunction therewith. Fig. 2 represents a side elevation of a portion of Fig. 1.

Similar numerals of reference indicate corresponding parts in the figures.

Referring to the drawings, I have deemed it unnecessary in the present instance to illustrate and describe the inlet valve and the means for maintaining the liquid in the tank at a predetermined level since the same form per 86 no part of my present invention and any desirable or conventional type of inlet valve and controlling means may be employed.

1 designates the bottom of the tank which latter may be of the usual form or have any desired contour provided the flushing mechanism may assume an upright position therein.

2 designates the casing or body of the flushing mechanism, the upper portion of which has preferably integral therewith the L 3, the outer end of which is threaded, as at 4, thereby adapting the same to receive the threaded end of the siphon discharge conduit 5 which latter terminates a desired distance from the tank bottom 1.

16 designates a goose neck or upwardly inclined nipple preferably integral with the casing 2 and having its end adapted to receive a metal or other valve 17 working on the principle of a low pressure aspirator. The valve or cover 17 is provided with a lug 18 centrally located thereon, in the present instance.

19 designates a link or arm fulcrumed at 20 in lugs 21 carried by the casing 2 and having its opposite end suitably apertured or otherwise adapted to pass over the lug 18 carried by the valve 17.

22 designates a cable or chain for actuating the valve 17.

One end of the link or arm 19 is provided with the angularly extending lug or boss 23 having a contact face 24 adapted to engage the casing 2 and serve as a stop in order to limit the movement of the valve 17 25 designates an S-shaped hook, as best seen in Fig. 2, and to which the cable 22 is secured, the lower end of said hook passing through an aperture 26 in the lug 18 thereby serving to connect the cable 22 with the valve 17 and also look or hold in position the curved lever 19.

The operation of my novel device can now be readily understood and is as follows When it is desired to flush, the cable 22 is pulled thus causing the lever 19 to turn on its pivot 20 and lift the valve 17 from its seat. As soon as the valve is lifted from its seat the water will pass through the nipple 16, the extension 6 and flush pipe 11 thereby creating a low vacuum which will cause the water to be drawn up in the pipe 5 through the L 8 into the casing 2 and thence through the extension 6. As soon as the cable is released the valve 17 will reseat itself owing to its own weight and the pressure of the water thereabove, the parts assuming their normal position as seen in Fig. 1. When the valve 17 is seated the flow of water through the nipple 16 is cut ofl thus breaking the vacuum and no more water, with the exception of that which is in the space connecting directly with the flushing pipe, will pass down said pipe until the cable is again pulled.

It will be evident to those skilled in this Patented Oct. 24, 1911.

art that my present device may be economically manufactured and that the number of parts required has been reduced to a minimum with consequent reduction in the cost of maintenance.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

The combination of a casing forming a siphon and provided wit-h an inlet, a valve comprising a plate 17 for controlling said inlet, a lug 18 secured to said plate, a link 19 pivotally secured to the casing and having an aperture through one end fitting over said lug 18 whereby said link is removable therefrom, the other end of said link having an inclined face adapted to contact with the casing when the plate is raised and thus limit the opening of the valve, and an op erating device having a detachable connection secured to said lug 18 which serves to prevent disengagement of said link 19 from said lug 18.

JOSEPH LAFRANOE.

WVitnesses ZIPIIIRIN FILION, J. B. A. TRAUGOEU.

Copies of this natent may be obtained for five cents each, by addressing the Commissioner of Iatents. Washington, D. C. 

